package com.lyn.gulimall.order.config;

import org.springframework.amqp.core.Message;
import org.springframework.amqp.rabbit.connection.CorrelationData;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.amqp.support.converter.MessageConverter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.annotation.PostConstruct;
@Configuration
public class MyRabbitConfig {

    @Autowired
    RabbitTemplate rabbitTemplate;

    /**
     *使用JOSN序列化机制,进行消息转换
     */
    @Bean
    public MessageConverter messageConverter(){
        return new Jackson2JsonMessageConverter();
    }

    /**
     * 定制RabbitTempLate
     * 1.服务器收到消息就回调
     *      1.spring.rabbitmq.publisher-confirms=true
     *      2.确认回调
     * 2.开启发送端消息抵达队列确认
     *      1.spring.rabbitmq.publisher-returns=true
     *      2.spring.rabbitmq.template.mandatory=true
     */
    @PostConstruct  //MyBabbitConfig对象创建完成以后,执行这个方法
    public void initRabbitTemplate(){
        //设置确认回调
        rabbitTemplate.setConfirmCallback(new RabbitTemplate.ConfirmCallback() {
            /**
             *  1.只要消息抵达Broker就ack=true
             * @param correlationData   当前消息的唯一关联数据(唯一id)
             * @param ack   消息是否成功收到
             * @param cause    失败原因
             */
            @Override
            public void confirm(CorrelationData correlationData, boolean ack, String cause) {
                System.out.println("confirm...correlationData["+correlationData+"]==>ack["+ack+"]==>cause["+cause+"]");
            }
        });

        //设置消息抵达队列的确认回调
        rabbitTemplate.setReturnCallback(new RabbitTemplate.ReturnCallback() {
            /**
             * 只要消息没有投递给指定的队列，就触发这个失败回调
             * @param message   投递失败的消息详细信息
             * @param replyCode 回复的状态吗
             * @param replyText 回复的文本内容
             * @param exchange  当时这个消息发给那个交换机
             * @param routingKey    当时这个消息用哪个路由键
             */
            @Override
            public void returnedMessage(Message message, int replyCode, String replyText, String exchange, String routingKey) {
                System.out.println("Fail Message["+message+"]==>replyCode["+replyCode+"]==>replyText["+replyText+"]==>exchange["+exchange+"]==>routingKey["+routingKey+"]");
            }
        });
    }
}
